| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Quasi-hydrostatic Limit of LiF as a Pressure Transmitting Medium and Its Equation of States |
| GUO Jia-Zeng1, WU Ye1, ZHU Feng1, WU Xiang1**, YANG Ke2, QIN Shan1** |
1Key Laboratory of Orogenic Belts and Crustal Evolution (Ministry of Education), and School of Earth and Space Sciences, Peking University, Beijing 100871
2Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204
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| Cite this article: |
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GUO Jia-Zeng, WU Ye, ZHU Feng et al 2014 Chin. Phys. Lett. 31 056201 |
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Abstract Quasihydrostatic limit of LiF as a pressure transmitting medium is investigated by synchrotron radiation x-ray diffraction combined with the diamond anvil cells technique up to 60 GPa at room temperature. The equation-of-state parameters of LiF are determined to be V0=65.7(2) ?3, B0=58(3) GPa and B0'=4.9(2) in the silicon oil environment; V0=67.4(3) ?3, B0=51(3) GPa and B0'=4.7(2) without pressure transmitting medium. The full width at half maximum of LiF (111) peak increases with the increase of pressure in two independent experiments. The pressure distribution in the sample chamber is estimated by line-scanning x-ray diffraction measurements across the chamber's center, which presents as homogeneous with Pmax?Pmin of about 1 GPa below 40 GPa.
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Published: 24 April 2014
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| PACS: |
62.50.-p
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(High-pressure effects in solids and liquids)
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64.30.Jk
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(Equations of state of nonmetals)
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61.05.cp
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(X-ray diffraction)
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